Add app/services/product_service.py

app/services/product_service.py

@@ -0,0 +1,43 @@
+from sqlalchemy.orm import Session
+from app.models.product import Product
+from app.schemas.product import ProductCreate, ProductUpdate
+
+
+def create_product(db: Session, data: ProductCreate) -> Product:
+    prod = Product(**data.model_dump())
+    db.add(prod)
+    db.commit()
+    db.refresh(prod)
+    return prod
+
+
+def get_products(db: Session, skip: int = 0, limit: int = 20):
+    return db.query(Product).offset(skip).limit(limit).all()
+
+
+def get_product(db: Session, product_id: str):
+    return db.query(Product).filter(Product.id == product_id).first()
+
+
+def update_product(db: Session, product_id: str, data: ProductUpdate):
+    prod = get_product(db, product_id)
+    if not prod:
+        return None
+    for field, value in data.model_dump(exclude_unset=True).items():
+        setattr(prod, field, value)
+    db.commit()
+    db.refresh(prod)
+    return prod
+
+
+def delete_product(db: Session, product_id: str):
+    prod = get_product(db, product_id)
+    if not prod:
+        return False
+    db.delete(prod)
+    db.commit()
+    return True
+
+
+def get_low_stock_products(db: Session):
+    return db.query(Product).filter(Product.current_stock < Product.min_stock).all()